We let x be the number of tickets that Sara and Jake sold individually. With this representation, the number of tickets sold by Cole is equal to 2x+6.
(a) x + x + (2x + 6) = 538
The value of x from the generated equation is 133.
(b) Sara sold a total of 133 tickets.
<span>length of a diagonal of the square = </span>√(12^2 + 12^2)
= √(144 + 144)
= √288
= 16.97 cm
The answer should be 64 cars sold at the dealership